Tesla Model 3 Rear Drive Unit
Jump to navigation
Jump to search
External Documentation
Tesla Model 3 Rear Drive Unit Hacking (forum thread)
https://github.com/damienmaguire/Tesla-Model-3-Drive-Unit (Hardware and reverse engineering details)
https://github.com/jsphuebner/stm32-sine/tree/tesla-m3-gate-driver (STM32 "modboard" firmware dev. branch)
Part Numbers
| Part Number | Description | Max Current | Cars |
|---|---|---|---|
| 1120970-00-F | (ASY,M3,3DU,REAR,IGBT) - original RWD and/or "binned" Perf | 800A | Model 3 |
| 1120980-00-G | (ASY,M3,REAR 3DU,MOSFET,GLOBAL) - early AWD motor | 800A | Model 3 / Model Y |
| 1120990-00-G | (ASY,M3,REAR,MOSFET-LC,GLOBAL) - newer AWD motor | 600A | Model 3 / Model Y |
| 1521365-00-B | (ASY, REMAN, 3DU-Rear 800 MOSFET) - Remanufactured 1120980-00-G | 800A | Model 3 / Model Y |
| 1521487-00-A | (ASY, REMAN, 3DU-REAR 630 MOSFET) - Remanufactured 1120990-00-G | 600A | Model 3 / Model Y |
Details from https://www.reddit.com/r/teslamotors/comments/ioat3d/rear_motor_efficiency_improvements_980_vs_990/.
Connectors and Pinouts
| Label | Description | Pins | Compatible Plugs |
|---|---|---|---|
| ? | Inverter connector | 30 | ? |
| ? | Rotor Shaft Resolver | 8 | ? |
| ? | Oil Pump | 3 | ? |
Mechanical Specification
Max rotor speed: 18,447 rpm
Input shaft gear: 31 teeth
Counter shaft input: 81 teeth
Counter shaft output: 24 teeth
Ring gear: 83 teeth
Gearbox Ratio: (81/31) * (83/24) = 9.036
Details from https://www.youtube.com/watch?v=SRUrB7ruh-8.
Inverter Components
Details from https://www.youtube.com/watch?v=l6dV2re3rtM.